Affiliation:
1. College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 China
2. Chongqing key laboratory of soft‐matter material chemistry and function manufacturing Southwest University Chongqing 400715 China
3. State Key Laboratory of Fluid Power & Mechatronic System, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Center for X‐Mechanics, Department of Engineering Mechanics Zhejiang University Hangzhou 310027 China
Abstract
AbstractHerein, a novel tough luminescent hydrogel with Europium is fabricated using a facile copolymerization process by introducing 2,2’:6’,2‐terpyridine (TPy) into a dual physical cross‐linked hydrogel. The obtained P(NAGA‐co‐MAAc)/Eu/TPy (x) (x refers to the feed ratio of NAGA to MAAc) hydrogels not only show outstanding mechanical performances (fracture strength, ≈2.5 MPa), but also give a special ability of rapid detection to low concentrations of zinc ions. Attractively, the theoretical limits of detection (LOD) of the hydrogel sensors are calculated as 1.6 µm, which is acceptable within the WHO limit. Furthermore, the continuous change in fluorescence of P(NAGA‐co‐MAAc)/Eu/TPy (10) strips upon contact with Zn2+ can be clearly observed by the naked eyes with the aid of a portable UV lamp, resulting in semi‐quantitative naked‐eyes detection through a standard colorimetric card. Moreover, by identifying the RGB value of the hydrogel sensor, it can also realize quantitative analysis. Therefore, excellence in sensing, simplicity in structure, and convenience in using make P(NAGA‐co‐MAAc)/Eu/TPy (10) hydrogel as a superior fluorescent chemosensor of Zn2+ ions.
Funder
National Natural Science Foundation of China
Chongqing Municipal Science and Technology Bureau
Subject
Materials Chemistry,Polymers and Plastics,Organic Chemistry